Pith Number

pith:QEVOJISO

pith:1999:QEVOJISOTN46PBERC5XCQ7LR2S

not attested not anchored not stored refs pending

On the nature of black hole entropy

Ted Jacobson

arxiv:gr-qc/9908031 v2 · 1999-08-10 · gr-qc · hep-th

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QEVOJISOTN46PBERC5XCQ7LR2S}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Cited by

1 paper in Pith

Information-Theoretic Black Hole Entropy I: Beyond the Area Law

Receipt and verification

First computed	2026-07-04T16:13:53.846833Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

812ae4a24e9b79e78491176e287d71d4b648b79916a06a4944873870fb5a3b31

Aliases

arxiv: gr-qc/9908031 · arxiv_version: gr-qc/9908031v2 · doi: 10.48550/arxiv.gr-qc/9908031 · pith_short_12: QEVOJISOTN46 · pith_short_16: QEVOJISOTN46PBER · pith_short_8: QEVOJISO

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/QEVOJISOTN46PBERC5XCQ7LR2S \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 812ae4a24e9b79e78491176e287d71d4b648b79916a06a4944873870fb5a3b31

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7616f4e81f03203b81b2ded19e280b3f4cc1585a0621d5a23c2395f7c02dc617",
    "cross_cats_sorted": [
      "hep-th"
    ],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "1999-08-10T21:16:37Z",
    "title_canon_sha256": "d4707dc1ef877ad03edebe9710071e23daa28a259d652113cdf6e1967bcfa0fa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/9908031",
    "kind": "arxiv",
    "version": 2
  }
}